Fastener for paper forms and the like



March 5, 1946. A. P. TERRY 2,396,030

FASTENER FOR PAPER FORMS AND THE LIKE Filed Jan. 8, 1943 INVENTOR. A. E TERRY will eliminate 'the need tures'of advantage,

- is illu'strat'ed inithe forming part of the specification. 'It *is to be gsimii er'to' tnaeenqwn in o i o -for a pu'eeti rrto the extenoror theduct.

" irigtegetner ad oining "s'ec Patented Mar. 5, 1946 umree 11 ATENT orries FASTENERERQR PAiigitFbRMS'AND THE LIKE *Allg-liStllSP. Terry, Berkeley,--Galif'. h spiicatioii immary s, 1e43,sesame-4715677 The invention relates to fastrierssjudh alsior securing together the parts of paper'fornis, and more particularlyfor securing together and maintaining in pro'per relation the adjoining walls of -a.lpaper duct.

-object o'f 'therpreserit invention'is taproyide ai'astenin'g -means of the charaeter 'descrijoed in which all of the parts of the iastener including the ,wall retaining -and the wall attaching r portions are .proyided as'self contained and integral members of the fastener, x Another object of the inve tion is to-provide a fastening'meansof the character described which for using piercing tools, =and -avoid the necessity of aligning -of fastener members-andthe-handling of small looseparts,

*A further object of the invention is to provide a 'fastening means of the character -deseribed --which'may-be readily embodiedin different-forms adapted for usein holding and securing together =the'side walls/of the same section-of theduct, or for securing and holding together not-only such'walls but the walls of adjoining :sections of the duct. V

The=invention possesses other objects and feasome of whichpwith the 'fore- 'l'g'oing, will be set forth in the followingdesc'riptidn of theiprefer'redformofthe invention which drawing accompanying and understood,however, that variations-in the showing made by the said drawing and description inay beado'pted within the' scopeof the invention as set forth in'the claims. r

Referring to said drawing- 1 Fig'iire 1 is a perspective view of a portion of a duct showing'the fastening means of my inventionapplied the'rto, parts of the 'walls "of the more nearly. o o

2 is -'a perspective view ofthe' fastener a15ove'as shown-in Figure 1.

-Figifie 3 is "a "perspective viewfoi a fastener r steni ngifieane which iar nemihgandeeeur- Fi'g-iifef is arrae'memar'y view similar to Fig- Figure 5 is a longitudinal sectional new through adjacent portions of adjoining duct sec 'tidr'isIwith theiastning means shown in Figure 4.

As illustrated in Figures 1 to 3, the fastening means of my invention is designed for use in retaining and securing in right-angular relation Figure 2 but designed "whichi'sillustratedin Figure "1.

- however cneadjae misidewanssera uut a section of A h I o Tnewans 1 0f thety-pe of duct t men the present in'verition is particularly applicable, are constructed 'dfg aper, fibrelcoard, and the like, it being understood that the fasteners may be used with plywood and'other relatively soft materials-or walls of a nature which can --be readily "pierced with 7 an instrument with hand pressure. The type 0f duct "ref erred to is usually formed with four side walls and ismadesquare or of other rectangular form in cross-section.

As thus illustrated, the fastener comprises a c plater 8=formed of a single piece of sheet material "preferably metal, andbent or foldd as a't 'fl ito provide portions l 2 and l3'arranged ih a 'l ar i'elationcorresponding to the-relation between-the Wallsof the duct to-Whi'ch "the faste'rir i'sto be retain applied. The fastenerasillustratedih"l igures 1 and 2, is designed for application to the interior jside of the-wallsorthe duct, ahdis'ar'r'anged for positioning at the juncture ofthe two sides tdlae I and secured togetherthereby.

'riie'siuesiaor the portions! rand faiarran'ged to be exposed on the interior of "the d-uct "are form'edf smooth and without pretuberenees, so "as to 'avoid an interference with 'thenow df'the "sides is of the'fastner arranged tone-against t e, walls I2 and I3, are-a'plurality df tongues :l Twhicharefmade so as to be capable ofepiercing the wane and ueingnexed intermediate the ends of the tonguesinorder that the walls-may be 3E Y dcked in place between the sides 45 0f thep1ate portions andjthe bent ends of the tongues as will be hereinafter-explained.

Each tongue, it will be clear, is formed: as an integral partof the plates and is m'ade bye-approare eiit andbenrat the bas'in such the sides or faces of the tongues, rather the edges =priately slitting the plate stock to form'the sides Wand-free end 19 of the tongue and then-bending the tongue at the base out of the planeof the "associated plate 'poition so that the "tongue will extend perpendicularly outward from the side i6. Sinc'ethe tongues arerequired'to pierce the walls, the "ends I9 are beveled to a siiarp point, and'prei''rably the body of'the'to'ng'iiesare made "or rela'tiifely 'eensiderabie "\iridth and with parallel side edge's-"sb'that whhitli'e 1 tbhgii' are pereuve1y'ehgaged with thewallsfthre'wilfm a arm engagement therebetween. In this conthereof, will be disposed parallel to the bend 9 of the plate. In view of this the broad surface another at the ends. fasteners are provided in pairs, with one fastener of the tongues will be presented to resist separation of the adjacent walls at the joint.

In applying the fastener, it is merely inserted or positioned to lie at the juncture of the walls at what is to be the inside of the duct. The fastener is held with its sides [6 toward the walls, and then with a suitable backing preferably held against the sides M of the fastener, the Walls are pressed against the prongs until the Walls are pierced and engaged with the sides [6. The tongues, are made of considerably greater length. than the thickness of the walls, and therefore when the walls are engaged with the side l6, an appreciable part 2| of the tongues will be'projected from the outer side of the walls. As a final operation the parts 2! are clinched over and upon the walls so that the wall will be firmly secured and locked to the fastener and in position relative to each other.

Attention should also be directed to the fact that in forming the tongues in the plate portions, the portion of the tongue contiguous with the plate material is nearer the bend 9, and in this way when the tongue parts 2| are bent or clinched over the Walls toward the joint therebetween, the portion of the walls clamped betweenthe parts 2| and the body of the plate portions will be engaged by solid surfaces on both sides thereof. Furthermore the walls will be clamped nearer the-joint and there will be less danger of the adjacent edges of the walls becoming separated along the joint.

If desired, the fasteners may be arranged for securing and holding the walls in position by application of the fastener to the exterior surfaces of the walls. A fastener adapted for this type of application is illustrated in Figure 3. In this embodiment the wall portions are bent as in the first described embodiment, but the tongues are struck out 50 as to extend from th sides I4 which are arranged to about the surfaces of the walls. In applying this form of fastener, it has been found preferable to completely pierce and lock one wall in position before effecting the piercing operation of the adjacent wall. In this way the protruding tongues of the one plate portion will not interfere with the ready positioningof the walls on the other plate portion during the applying operation.

In Figures 4 and 5, I have shown the fastener of a form designed not only to secure and 1001; the side walls of the duct together, but to secure and lock adjoining sections of the duct to one In this embodiment, the

3| secured to the Walls of one section, and the other fastener 32 secured to the walls of the other section, and both sections arranged to be secured together. As shown in the drawing, each of the fasteners 3| and 32, are formed of plates bent to respectively provide angular related portions 38 and 34,. and 36 and 31. The portions 34 and 37 are formed with tongues 38 similar to the tongues I 1, and arranged to pierce and look over the walls of the adjoining sections. The fasteners 3i and 32 are arranged to be positioned with the portions 34 and 31 extending in reverse directions away from each other whereby the perpendicular Dortions 33 and 36 may be abutted one against the other. Attachment of the portions 33 and 36 to gether is preferably effected by means of tongues 38 provided on one of such portions here shown on the portion 36, and arranged to engage registering openings 39 on the other portion. After the tongues 38 are fully inserted through the openand in order to secure the adjacent walls of each section together, the portions 33 and 36 of each pair of fasteners are provided with end extensions 42 which are arranged to be spot welded or otherwise secured together so that all of the fasteners on each section will be rigidly held together in angular relation.

I claim:

1. A fastener for securing together walls of a paper duct or the like comprising a pair of plates of sheet material each bent to provide angularly related portions one of which is provided with upset pointed wall penetrating and clinching tongues, the other portions of the plates being formed with cooperating interlocking means for securing such portions together in side by side relation and with the contiguous portions aligned and reversely disposed.

2. A fastener for securing together walls of a paper duct or the like comprising a plate of sheet material bent to provide angularly related portions, one of said portions having pointed wallpenetrating and clinching tongues extending substantially parallel to and opposite said othe portion, and a guide member extending from adjacent the bend in the plate reversely of said first mentioned portion and having a guide surface coplanar with one of the sides of the second mentioned portion.

3. A fastener for securing togetherwalls of a paper duct or the like, comprising a pair of plates of sheet material each formed to provide angularly related portions one of which of each plate is provided with upset pointed wall penetrating and clinching tongues, the other portion of the plates being provided with cooperating interlocking means for securing such portions together in side by side relation and with the contiguous portions aligned and reversely disposed, and a guide member extending from one of the plates adjacent the bend and having a guide surface positioned to engage the first mentioned portion when the plates are operatively secured together.

4. A paper wall duct fastening means comprising .a plate of sheet material bent to provide an-- gularly related portions for engagement with the sides of adjoining wall of the duct, each of said portions having struck-up integral tongues with an inner part extending through the associated wall and an outer part clinched over and upon the Wall, said tongues being bent at their base and intermediate their ends about axes parallel to the bend of the plate, and the pointed ends of the tongues extending toward the joint between the walls and away from the openings from which the tongues have been removed and bent to overlie the area of the portion without said openings.

AUGUSTUS P. TERRY. 

